The velocity-time graph below represents the motion of a particle along a straight line. velocity/m s 20 10 -10 -20 NL 2 A C Which of the following is true? I 12 I only I and II only The particle's velocity is momentarily zero at t = 5 s. II The particle comes back to its starting point in 12 s. III The particle travels in the opposite direction between 1= 5 s and t= 12 s. B D 12 time/s II only I, II, and III ( )
Displacement, Velocity and Acceleration
In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.
Linear Displacement
The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.

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